Senior Airman Danielle Clements and Airman 1st Class Samuel Mericle, members of the Air Force District of Washington chemical, biological, radiological, nuclear, and high yield explosives response force, perform a site survey upon arrival to the simulated deployment cave during a training exercise at the Center for National Response in Gallagher, W.Va., March 25, 2010. During the site survey, the team was told to identify any hazardous chemicals and mark them for the next team to be able to sample. The response force is made up of personnel from the 316th Wing, the 79th Medical Wing and the 11th Wing and is a force that combines the bioenvironmental engineers, civil engineering readiness, emergency management and fire emergency services to respond to emergency situations in the National Capital Region. (U.S. Air Force photo by Staff Sgt. Renae L. Saylock)